338
FZUS51 KLWX 191134
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
734 AM EDT Sat Apr 19 2025

Tidal Potomac River and Maryland portion of Chesapeake Bay.

Forecasts of wave heights do not include effects of wind direction
relative to tidal currents. Expect higher waves when winds are
blowing against the tidal flow.  Waves flat where waters are iced over.

ANZ500-192000-
734 AM EDT Sat Apr 19 2025

.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...

A cold front will approach today, then move into the area tonight.
The boundary will pass south of the area Sunday. An additional cold
front may move over the waters Monday night. Small Craft Advisories
may be needed through early Sunday, and again late Monday into early
 Tuesday.  Boaters should be aware of the threats of boating in cold
water,  even when air temperatures are warm. Visit
weather.gov/safety/coldwater for more information.

$$

ANZ535-192000-
Tidal Potomac from Key Bridge to Indian Head-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt... becoming NW
5 kt after midnight. Waves 1 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers.
.WED...SE winds around 5 kt. Waves 1 ft or less.

$$

ANZ536-192000-
Tidal Potomac from Indian Head to Cobb Island-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt... becoming NW
5 kt late. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers.
.WED...E winds around 5 kt. Waves 1 ft.

$$

ANZ537-192000-
Tidal Potomac from Cobb Island to Smith Point-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt...becoming W 5 to 10 kt late. Gusts
up to 20 kt. Waves 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 10 to 15 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 to 15 kt. Waves 2 ft.
.TUE...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.WED...E winds around 5 kt. Waves 1 ft or less. A chance of showers
in the morning.

$$

ANZ530-192000-
Chesapeake Bay north of Pooles Island-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt...becoming NW 5 to 10 kt after
midnight. Gusts up to 20 kt. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...NE winds around 5 kt. Waves 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of showers through the day.
.WED...SW winds around 5 kt. Waves 1 ft or less.

$$

ANZ531-192000-
Chesapeake Bay from Pooles Island to Sandy Point-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming NW
5 to 10 kt after midnight. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft or
less. A chance of showers through the day.
.WED...S winds around 5 kt. Waves flat.

$$

ANZ538-192000-
Patapsco River including Baltimore Harbor-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt. Gusts up to 20 kt... increasing to
25 kt late. Waves 1 to 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt... becoming NW
5 to 10 kt after midnight. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds around 5 kt. Waves flat.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt. Waves 1 ft or less. A chance of showers
through the day.
.WED...SE winds around 5 kt. Waves flat.

$$

ANZ539-192000-
Chester River to Queenstown MD-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming NW
5 to 10 kt after midnight. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves flat.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 10 kt. Waves 1 ft. A chance of showers.
.TUE...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft or
less. A chance of showers through the day.
.WED...SW winds around 5 kt. Waves flat.

$$

ANZ532-192000-
Chesapeake Bay from Sandy Point to North Beach-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming NW
5 to 10 kt after midnight. Waves 3 ft... subsiding to 1 ft after
midnight.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 kt. Waves 2 ft. A chance of showers.
.TUE...W winds 5 to 10 kt...becoming N after midnight. Waves 1 ft. A
chance of showers.
.WED...SE winds 5 kt. Waves less than 1 ft.

$$

ANZ540-192000-
Eastern Bay-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming NW
5 to 10 kt after midnight. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves flat.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 10 kt. Waves 1 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft
or less. A chance of showers.
.WED...SW winds around 5 kt. Waves flat.

$$

ANZ533-192000-
Chesapeake Bay from North Beach to Drum Point-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming NW
5 to 10 kt late. Waves 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.TUE...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.WED...E winds 5 kt. Waves less than 1 ft.

$$

ANZ541-192000-
Choptank River to Cambridge MD and the Little Choptank River-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... becoming W
5 to 10 kt after midnight. Waves 1 to 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 10 to 15 kt. Waves 1 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.WED...SW winds 5 kt. Waves less than 1 ft.

$$

ANZ542-192000-
Patuxent River to Broomes Island MD-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 kt with gusts to 20 kt. Waves 1 ft.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt until early
morning. Waves 1 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 kt. Waves less than 1 ft.
.MON...SE winds 5 to 10 kt. Waves 1 ft.
.MON NIGHT...S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
.TUE...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.
.WED...E winds around 5 kt. Waves 1 ft. A chance of showers in the
morning.

$$

ANZ534-192000-
Chesapeake Bay from Drum Point to Smith Point-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.TONIGHT...SW winds 10 to 15 kt...becoming W late. Gusts up to
20 kt. Waves 2 to 3 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.TUE...SW winds 10 to 15 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of showers.
.WED...N winds 5 to 10 kt...becoming SE. Waves 1 ft. A chance of
showers in the morning.

$$

ANZ543-192000-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
734 AM EDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt... becoming W
late. Waves 2 ft.
.SUN...N winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...SE winds 5 to 10 kt. Waves 1 ft.
.MON...SE winds 10 to 15 kt. Waves 1 ft.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.TUE...SW winds 10 to 15 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 ft. A chance of showers.
.WED...N winds 5 to 10 kt...becoming W in the afternoon, then
becoming SE. Waves 1 ft or less. A chance of showers in the morning.


$$